WO2021049998A1 - Dehumidification system - Google Patents

Dehumidification system Download PDF

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Publication number
WO2021049998A1
WO2021049998A1 PCT/SE2020/050854 SE2020050854W WO2021049998A1 WO 2021049998 A1 WO2021049998 A1 WO 2021049998A1 SE 2020050854 W SE2020050854 W SE 2020050854W WO 2021049998 A1 WO2021049998 A1 WO 2021049998A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling
process air
fluid
heat exchanger
circuit
Prior art date
Application number
PCT/SE2020/050854
Other languages
English (en)
French (fr)
Inventor
Magnus Carlsson
Original Assignee
Munters Europe Aktiebolag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020227012254A priority Critical patent/KR20220062089A/ko
Priority to CA3153956A priority patent/CA3153956A1/en
Priority to MX2022003104A priority patent/MX2022003104A/es
Priority to CN202080063595.9A priority patent/CN114364924A/zh
Priority to AU2020345581A priority patent/AU2020345581A1/en
Priority to US17/642,473 priority patent/US20220307710A1/en
Application filed by Munters Europe Aktiebolag filed Critical Munters Europe Aktiebolag
Priority to EP20863061.6A priority patent/EP4028697A4/en
Priority to JP2022513693A priority patent/JP2022548207A/ja
Priority to CN202410856909.0A priority patent/CN118729405A/zh
Publication of WO2021049998A1 publication Critical patent/WO2021049998A1/en
Priority to IL291237A priority patent/IL291237A/he
Priority to ZA2022/03716A priority patent/ZA202203716B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/147—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with both heat and humidity transfer between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0008—Control or safety arrangements for air-humidification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/265—Drying gases or vapours by refrigeration (condensation)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1016—Rotary wheel combined with another type of cooling principle, e.g. compression cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1032—Desiccant wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1056—Rotary wheel comprising a reheater
    • F24F2203/106—Electrical reheater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the present disclosure relates to a dehumidification system, and a method of operating the dehumidification system.
  • Dehumidifiers such as sorption dehumidifiers and condensate dehumidifiers, are used for separating and removing moisture from air.
  • a sorption dehumidifier typically comprises a dehumidifying element in the form of a wheel or rotor holding desiccant material, which is effective in attracting and retaining water vapour.
  • the desiccant rotor may be divided in two sections, a process section and a regeneration section.
  • the airflow to be dehumidified, process air will pass through the process section of the desiccant rotor, the desiccant material in the rotor extracts moisture from the process air, so that it can leave the rotor as dried air.
  • the desiccant material is regenerated by another air stream, which flows through the regeneration section, all the while the desiccant rotor may rotate slowly about its longitudinal axis.
  • the dehumidifier can be operated continuously.
  • US2007056307 discloses an example of a dehumidifier having a desiccant wheel.
  • the present invention aims at providing an energy effective dehumidification system, which allows for stable and reliable dehumidification of process air.
  • the process air cooling heat exchanger is advantageously dimensioned to cool the process air at the process air inlet of the dehumidifier unit to a given constant air inlet temperature value (T2), said air inlet temperature o value (T2) preferably being below 10 C.
  • the regeneration air circuit is preferably connected to the condenser of the heat pump upstream of the dehumidifier unit.
  • the intermediate fluid circuit preferably comprises a heat exchanger arranged upstream of the heat pump evaporator to cool the regeneration air downstream of the dehumidifier unit.
  • the regeneration air circuit may comprise an electrical heater upstream of the dehumidifier unit, arranged to optionally heat the regeneration air if needed.
  • Fig. 1 illustrates a first example of the dehumidification system comprising an intermediate fluid circuit which is used to control the cooling fluid temperature upstream of an inlet process air cooling heat exchanger;
  • Fig. 2 illustrates a second example of the dehumidification system, wherein the cooling fluid of the intermediate fluid circuit collects heat from outlet regeneration air downstream of the dehumidification unit;
  • Fig. 3 illustrates a third example of the dehumidification system, wherein the intermediate fluid circuit is arranged to provide a separate cooling fluid flow through the outlet regeneration air cooling heat exchanger;
  • Fig. 4 is a schematic illustration of a method of operating the dehumidification system.
  • the parameter to be measured and controlled by the flow control system can be any fluid parameter that varies with the fluid temperature, such as temperature, density, viscosity etc., where the fluid temperature is preferred, since it is a parameter which is convenient to measure.
  • the cooling fluid temperature dependent parameter is referred to as the cooling fluid temperature in the below, although it could be any temperature dependent parameter.
  • the cooling fluid of the intermediate fluid circuit is a liquid, and remains in liquid state at all times, and it is suitably water, optionally comprising an amount of a freezing-point depressing additive. It is referred to as "the cooling fluid" since it is used to cool the incoming process air upstream of the process air inlet of the dehumidifier unit, but it acts as a heating fluid in the evaporator of the heat pump.
  • the process air temperature value (T2) upstream of the dehumidification unit will be dependent on the given set-point value (Tl set ) for the cooling fluid temperature upstream of the process air cooling heat exchanger (9), and is o o preferably as low as possible, preferably below 10 C, and suitably above 0 C. Measurement of temperature dependent parameters in a fluid flow is stable and reliable, as compared to measuring similar parameters in an air flow, and controlling the dehumidification system based on the cooling fluid temperature (Tl) upstream of the process air cooling heat exchanger (9) therefore leads to stable operation of the of the system.
  • the properties of the process air entering the dehumidification system can vary substantially from time to time.
  • these properties can vary largely due to seasonal variations and time of the day, and this can be particularly significant in certain geographical regions.
  • the process air is taken from a confined space, such an industrial building, the properties can vary depending on various circumstances, such as the activities performed in the building, and the weather variations outside the building. Therefore, in order to obtain a constant temperature of the process air upstream of the dehumidifier unit, the process air cooling heat exchanger (9) will need to be dimensioned according to the specific circumstances of the site where the system is implemented.
  • the intermediate fluid circuit may preferably comprise a bypass conduit (8b), suitably be provided with a fluid control valve (13), allowing a part of the cooling fluid (C) to bypass the process air cooling heat exchanger (9).
  • a bypass conduit (8b) suitably be provided with a fluid control valve (13), allowing a part of the cooling fluid (C) to bypass the process air cooling heat exchanger (9).
  • This increases the flexibility of the dehumidification system, since the cooling fluid flow in the main conduit (8a) of the intermediate fluid circuit can be controlled both by adjusting the flow capacity of the pump (11) and/or the fluid control valve (12) in the main conduit, and by letting a part of the cooling fluid flow bypass the heat exchanger (9) through the bypass conduit (8b), e.g. by opening the fluid control valve (13).
  • the fluid control valves (12, 13) in the main conduit and the bypass conduit can of course be replaced by a three- way valve if desired.
  • the air stream used for regeneration of the desiccant material in the rotor needs to have a relatively high temperature, and will typically need to be heated.
  • the regeneration air circuit (4) can preferably be connected to the condenser (7) of the heat pump, upstream of the dehumidifier unit. This means that heat subtracted from the cooling fluid (C) in the heat pump evaporator (6) can be transferred to the inlet regeneration air (4a), via the refrigerant circuit (16) of the heat pump and the condenser, i.e.
  • heat subtracted from the process air (3) in the air cooling heat exchanger (9) can be utilized for heating the inlet regeneration air (4a), via the intermediate fluid circuit (8) and the refrigerant circuit (16) of the heat pump (5).
  • An electrical heater (15) may be comprised in the regeneration air circuit (4) upstream of the dehumidifier unit, arranged to optionally heat the inlet regeneration air (4a) if needed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Gases (AREA)
  • Central Air Conditioning (AREA)
  • Air Conditioning Control Device (AREA)
PCT/SE2020/050854 2019-09-13 2020-09-11 Dehumidification system WO2021049998A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
CA3153956A CA3153956A1 (en) 2019-09-13 2020-09-11 Dehumidification system
MX2022003104A MX2022003104A (es) 2019-09-13 2020-09-11 Sistema de deshumidificacion.
CN202080063595.9A CN114364924A (zh) 2019-09-13 2020-09-11 除湿系统
AU2020345581A AU2020345581A1 (en) 2019-09-13 2020-09-11 Dehumidification system
US17/642,473 US20220307710A1 (en) 2019-09-13 2020-09-11 Dehumidification system
KR1020227012254A KR20220062089A (ko) 2019-09-13 2020-09-11 제습 시스템
EP20863061.6A EP4028697A4 (en) 2019-09-13 2020-09-11 DEHUMIDIFICATION SYSTEM
JP2022513693A JP2022548207A (ja) 2019-09-13 2020-09-11 除湿システム
CN202410856909.0A CN118729405A (zh) 2019-09-13 2020-09-11 除湿系统
IL291237A IL291237A (he) 2019-09-13 2022-03-09 מערכת הפחתת לחות
ZA2022/03716A ZA202203716B (en) 2019-09-13 2022-03-31 Dehumidification system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1951038-7 2019-09-13
SE1951038A SE543617C2 (en) 2019-09-13 2019-09-13 A dehumidification system and a method operating said dehumidification system

Publications (1)

Publication Number Publication Date
WO2021049998A1 true WO2021049998A1 (en) 2021-03-18

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Application Number Title Priority Date Filing Date
PCT/SE2020/050854 WO2021049998A1 (en) 2019-09-13 2020-09-11 Dehumidification system

Country Status (12)

Country Link
US (1) US20220307710A1 (he)
EP (1) EP4028697A4 (he)
JP (1) JP2022548207A (he)
KR (1) KR20220062089A (he)
CN (2) CN118729405A (he)
AU (1) AU2020345581A1 (he)
CA (1) CA3153956A1 (he)
IL (1) IL291237A (he)
MX (1) MX2022003104A (he)
SE (1) SE543617C2 (he)
WO (1) WO2021049998A1 (he)
ZA (1) ZA202203716B (he)

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US20220307710A1 (en) 2022-09-29
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